Merge branch 'john_long-remove-gitlab_monitor-from-example' into 'master'

Removing gitlab_monitor from example config docs

See merge request gitlab-org/gitlab!47579

doc/administration/sidekiq.md

@@ -113,7 +113,6 @@ prometheus['enable'] = false
 gitlab_rails['auto_migrate'] = false
 alertmanager['enable'] = false
 gitaly['enable'] = false
-gitlab_monitor['enable'] = false
 gitlab_workhorse['enable'] = false
 nginx['enable'] = false
 postgres_exporter['enable'] = false